Mode Field Adapter (PM or Non-PM)

Mode Field Adapters (MFA) can be used for high power fiber lasers and fiber amplifiers. These devices can be used to connect two fibers with different core diameters and numerical apertures (NA). Lightel’s MFAs utilize mode field optimization technology to obtain high transfer efficiency and low beam degradation.


  • High Power
  • High Transfer Efficiency
  • Custom Configurations Available
  • Stable and Reliable


  • High Power Fiber Lasers
  • Fiber Amplifiers
Port Configuration1x1
Operating Wavelength1030~1080nm or 1450~1600nm
SMA Fiber6/12510/12510/1256/12520/25062.5/125
LMA Fiber10/12520/12525/25020/40030/250105/125
Signal IL for Forward use0.3 dB0.4 dB0.5 dB0.5 dB0.2 dB-
Signal IL for Reverse use0.3 dB0.5 dB0.7 dB0.7 dB0.2 dB2 dB
Total Power Handling10W50W10W
Polarization Extinction Ratio≥18dB for PM Fiber
Return Loss>45 dB
PigtailStandard 1m or custom
Operating Temperature0~75°C
Storage Temperature-40~85°C

Note 1: Values are referenced without connectors.
Note 2: Other package dimensions and optical performances available by request.

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